The advertisements read: "Exuberant. Smouldering.Uninhibited".  It was all that and more.
 Mink coats, cigarette-holders, lightly smeared eyeliner after a hard night. 
Dioressence launched as "le parfum barbare" (a barbaric perfume); the ready-to-wear fur collection by Dior in 1970 was orchestrated to give a powerful image of women as 
Venus in Furs. Commanding, aloof, demanding, 
even a dominatrix. The fragrance first launched as a bath oil product, reinforcing the name, i.e. Dior's Essence, the house's nucleus in liquid form; Dior wanted to write history. It later came as a stand alone alcoholic perfume, the first composed by 
perfumer Guy Robert for Dior and history it wrote indeed. A new breed of 
parfum fourrure was born!
Dioressence: A Wild, Untamed Fragrance
The 
fragrance of Dioressence itself, in part the brief being a depart from Guy Robert's refined style, was the love affair of 
ambergris (a 100% natural essence at the time) with 
the original 1947 Miss Dior, a 
chypre animalic perfume, itself laced with the 
animal notes of
 leathery castoreum in the base, so the two elements fused into each other most compatibly. 
Ambergris is lightly salty and nutty-smelling, creating a lived-in aura, while
 leather notes are sharper and harsher, especially when coming from castoreum, an animal essence from beavers with an intense almost death-like stink. The two give a pungent note.
In 
Miss Dior this is politely glossed over by a powdery gardenia on top. The animalicistic eroticism is only perceptible in the drydown. In 
Dioressence the 
sexiness is felt from the very start, only briefly mocked by a fruity lemony touch, and it only gains from further exposure to notes that lend themeslves to it: rich spices, dirty grasses, 
opulent resins, 
sensuous musk. In a way if 
Cinnabar and
 Opium (roughly contemporaries) modernised the message of the balsamic oriental classic 
Youth Dew, 
Dioressence gave both a run for their money, being bolder like the Lauder predecessor, yet in a rather greener scale.  
The intensity of the 
animalistic accord in 
Dioressence was boosted even further by the copious carnation-patchouli chord (much like in Jean Carles sexy 
Tabu), spiced even further with cinnamics (cinnamon notes) and given a glossy glamour with lots of natural jasmine. The greenery over the oriental-
chypre basenotes is like the veneer of manners over the killer instinct. Still the 
Guy Robert treatment produced something that was totally French in style. You can't help but feel it's more tailored, more formal than any modern fragrance, perhaps what a power-woman of the early 1980s would wear to power-lunch, even indulging in some footie work under the table if she feels like it, but its wild undercurrent is almost foreshadowing the contemporary taste for niche.
Why Dioressence Changed...to the Worse
Alas the perfume after a brief career fell into the rabbit-hole of a teethering house (The Marcel Boussac Group bankrupted in 1978 and it was purchased by the Willot house, which also bankrupted in 1981). Not only had the vogue for big orientals been swung in a "cleaner", starchier direction in the meantime (
Opium, Cinnabar, Giorgio), but the management hadn't really pushed the glam factor of Dior as much as Karl Lagerfeld had revolutionized, nay re-animated the house of Chanel (the effect in the mid-80s of that latter move was analogous to the miraculous push Tom Ford gave to Gucci in the late 90s; nothing sort of spectacular). Dior would need almost a whole decade to get its act together, bring out 
Poison (1985) and find its financial compass under the LVMH aegis. By then it was down to familiar LVMH accounting bean-counting and therefore marvels like 
Dior-Dior perfume and 
Dioressence were either axed (former) or given catastrophical face-lifts (latter). Same happened with the ill-fated, yet brilliant Dior masculine 
Jules, which had launched in those limbo years (1980 in fact).
Comparing Vintage vs.Modern Dioressence
I well recall the old formula of 
Dioressence, back when it was a mighty 
animalic-smelling oriental with moss in the base because it was alongside 
(vintage) Cabochard my mother's favorite perfume. She was neither particularly exuberant, not knowingly smouldering and rather inhibited, come to think of it. She was a real lady, through and through, and yet she loved 
Dioressence, le parfum barbare! (and her 
other choice isn't particularly blinkered either, is it?) There's really a dark 
id that is coming throuh perfume and allows us to role-play; what's more fun than that? The 
Non Blonde calls this Dior "Miss Dior's Casual Friday outfit" and I can see her point; it's letting your hair down, preferably for acts of passion to follow.
The modern version of 
Dioressence (at least since the early 2000s) has been thinned beyond recognition, the naturals completely substituted with synthetic replications, till my mother 's soul departed from the bottle, never to return. The new 
Dioressence on counters is a somewhat better chypre than recent memory, with a harsher mossy profile, a bit like a "cougar" on the prowl not noticing she's a bit too thin for her own good, all bones, no flesh. Still, an improvement over the catastrophic post-2005 and pre-2009 versions. 
Dioressence first came out as a bath oil in 1969 (advertisements from 1973 bear testament to that) and then as a "real" perfume in the same year. Perfumer credited is Guy Robert, although Max Gavarry is also mentioned by Turin as implicated in the process. The newest version (introduced in 2010, reworked by Francois Demachy) is in the uniform 
Creations de Monsieur Dior bottles with the silver mock-string around the neck in white packaging, just like 
Diorissimo, Forever and Ever, Diorella and 
Dior's Eau Fraiche. 
The Full Story of the Creation of Dioressence
In 
Emperor of Scent, author and scent critic Chandler Burr quotes Luca Turin: "The best Guy Robert story is this. The House of Dior started 
              making perfumes in the 1940s. Very small scale. The first two, of 
              which
 Diorama was one and 
Miss Dior the other, were made by 
Edmond  Roudnitska, a Ukrainian émigré who'd studied with 
              Ernest Beaux in Saint Petersburg because Beaux was the perfumer 
              to the czars. So Dior approached 
Guy Robert-they invite him to dinner, 
              they're talking over the cheese course, no sterile meeting rooms, 
              this is a brief among gentlemen-and they said, 'We're doing a new 
              perfume we want to call Dioressence, for women, but we want it 
very  animalic. The slogan will be
 le parfum barbare, so propose something 
              to us.' Oh boy. Guy can hardly wait. Of course he wants a Dior commission. 
              And the challenge of mixing the florals of the traditional Dior 
              fragrances into an 
animal scent (because this isn't just any animalic, 
              this is a Dior animalic, if you can imagine such a bizarre thing) 
              is just a bewitching challenge, who else would have the guts to 
              attempt joining those two. So he gets right to work, plunges in, 
              and he tries all sorts of things. And he's getting nowhere. Nothing's 
              working. He's frustrated, he doesn't like anything he's doing.
"In the middle of this, someone in the industry calls him, 
              and they say, 'There's a guy with a huge lump of ambergris for sale 
              in London-get up here and check it out for us.' 
Ambergris is the 
              whale equivalent of a fur ball, all the undigested crap they have 
              in their stomachs. The whale eats indigestible stuff, and every 
              once in a while it belches a pack of it back up[
1]. It's mostly oily 
              stuff, so it floats, and ambergris isn't considered any good unless 
              it's floated around on the ocean for ten years or so. It starts 
              out white and the sun creates the odorant properties by photochemistry, 
              which means that it's become rancid, the molecules are breaking 
              up, and you get an incredibly complex olfactory result. So Guy gets 
              on a plane and flies up to see the dealer, and they bring out the 
              chunk of ambergris. It looks like black butter. This chunk was about 
              two feet square, thirty kilos or something. Huge. A brick like that 
              can power Chanel's ambergris needs for twenty years. This chunk 
              is worth a half million pounds.
"The way you test ambergris is to rub it with both hands and 
              then rub your hands together and smell them. It's 
a very peculiar  smell, marine, sealike, slightly sweet, and ultrasmooth. So there 
              he is, he rubs his hands in this black oily mess and smells them, 
              and it's terrific ambergris. He says, Great, sold. He goes to the 
              bathroom to wash his hands 'cause he's got to get on an airplane. 
              He picks up some little sliver of dirty soap that's lying around 
              there and washes his hands. He leaves. He gets on the plane, and 
              he's sitting there, and that's when he happens to smell his hands. 
              The combination of the soap and ambergris has somehow created exactly 
              the animalic Dior he's been desperately looking for. But what the 
              hell does that soap smell like? He's got to have that goddamn piece 
              of soap. The second he lands in France, he sprints to a phone, his 
              heart pounding, and calls the dealer in England and says, 'Do exactly 
              as I say: go to your bathroom, take the piece of soap that's in 
              there, put it in an envelope, and mail it to me.' And the guy says, 
              'No problem.' And then he adds, 'By the way, that soap? You know, 
              it was perfumed with some Miss Dior knockoff.'
"So Guy put them together, and got the commission, and made, 
              literally, an animalic Dior. 
Dioressence was created from a cheap 
              Miss Dior soap knockoff base, 
chypric, fruity 
aldehydic, plus a 
              giant cube of rancid whale vomit[
2]. And it is one of the greatest 
              perfumes ever made."
, Bergamot, Orange, Jasmine, 
Violet, Rosebud, Ylang ylang, Geranium, Cinnamon, Patchouli, Orris Root, 
Ambergris, 
Oakmoss, Benzoin, Musk, Styrax.
Related reading on Perfume Shrine: The Dior fragrance reviews Series
ad collage via jeanette-soartfulchallenges.blogspot.com, Dior fur via coutureallure.com